Beat butter and shortening in large bowl until well blended. Add brown sugar and granulated sugar; beat thoroughly. Add egg and vanilla, beating until well blended. Stir together flour, baking soda and salt; gradually beat into butter mixture. Stir in baking pieces. Drop by rounded teaspoons onto ungreased cookie sheet.
Bake 10 to 12 minutes or until edges are lightly browned. Cool slightly; remove from cookie sheet to wire rack. Cool completely. About 3-1/2 dozen cookies.N
Notes
NOTE: CHOCOLATE COOKIE VARIATION: Decrease flour to 1 cup; add 1/3 cup HERSHEY'S Cocoa or HERSHEY'S SPECIAL DARK Cocoa.